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Finding the Fourth Proportional to 559,659.03, 772,332.08 and 317,954.87

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Solution

The fourth proportional to 559,659.03, 772,332.08 and 317,954.87 is: 438,779.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,659.03 : 772,332.08 = 317,954.87 : x
  2. Step 2: Convert to fraction form
    559,659.03/772,332.08 = 317,954.87/x
  3. Step 3: Cross multiply
    559,659.03x = 772,332.08 × 317,954.87
  4. Step 4: Simplify right side
    559,659.03x = 245,566,743,985.16
  5. Step 5: Solve for x
    x = 245,566,743,985.16/559,659.03
  6. Step 6: Final answer
    x = 438,779.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.